(66391) 1999 KW4:AVERAGE_SPEED:37.16 (kilometrePerSeconds)####(66391) 1999 KW4:DENSITY:2.0 (gramPerCubicCentimetres)####(66391) 1999 KW4:APOAPSIS:162164091.8388 (kilometres)
Having a density of 2.0 gm per cu cm, (66391) 1999 KW4, has an apoapsis of 162164091.8388 kilometres, an the average speed of 37.16 km per sec.